LTC3639
Info : RECOMMENDED FOR NEW DESIGNS
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LTC3639

High Efficiency, 150V 100mA Synchronous Step-Down Regulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 12
1ku List Price Starting From $4.37
Features
  • Wide Operating Input Voltage Range: 4V to 150V
  • Synchronous Operation for Highest Efficiency
  • Internal High Side and Low Side Power MOSFETs
  • No Compensation Required
  • Adjustable 10mA to 100mA Maximum Output Current
  • Low Dropout Operation: 100% Duty Cycle
  • Low Quiescent Current: 12μA
  • Wide Output Range: 0.8V to VIN
  • 0.8V ±1% Feedback Voltage Reference
  • Precise RUN Pin Threshold
  • Internal or External Soft-Start
  • Programmable 1.8V, 3.3V, 5V or Adjustable Output
  • Few External Components Required
  • Programmable Input Overvoltage Lockout
  • Thermally Enhanced High Voltage MSOP Package
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LTC3639 is a high efficiency step-down DC/DC regulator with internal high side and synchronous power switches that draws only 12μA typical DC supply current while maintaining a regulated output voltage at no load.

The LTC3639 can supply up to 100mA load current and features a programmable peak current limit that provides a simple method for optimizing efficiency and for reducing output ripple and component size. The LTC3639’s combination of Burst Mode® operation, integrated power switches, low quiescent current, and programmable peak current limit provides high efficiency over a broad range of load currents.

With its wide input range of 4V to 150V and programmable overvoltage lockout, the LTC3639 is a robust regulator suited for regulating from a wide variety of power sources. Additionally, the LTC3639 includes a precise run threshold and soft-start feature to guarantee that the power system start-up is well-controlled in any environment.

The LTC3639 is available in a thermally enhanced high voltage-capable 16-lead MSE package with four missing pins.

APPLICATIONS

  • Industrial Control Supplies
  • Medical Devices
  • Distributed Power Systems
  • Portable Instruments
  • Battery-Operated Devices
  • Automotive
  • Avionics
Part Models 12
1ku List Price Starting From $4.37

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

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Jun 5, 2024

- 24_0003

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

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May 22, 2024

- 24_0067

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADCS to Vanguard Int. (Taiwan)

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PRODUCTION

Feb 4, 2020

- 20_0129

Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

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Jun 21, 2022

- 22_0050

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

Filter by Model

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Reset Filters

Part Models

Product Lifecycle

PCN

Jun 5, 2024

- 24_0003

arrow down

Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2)

LTC3639EMSE#PBF

PRODUCTION

LTC3639EMSE#TRPBF

PRODUCTION

LTC3639HMSE#PBF

PRODUCTION

LTC3639HMSE#TRPBF

PRODUCTION

LTC3639IMSE#PBF

PRODUCTION

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PRODUCTION

LTC3639MPMSE#PBF

PRODUCTION

LTC3639MPMSE#TRPBF

PRODUCTION

May 22, 2024

- 24_0067

arrow down

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADCS to Vanguard Int. (Taiwan)

LTC3639EMSE#PBF

PRODUCTION

LTC3639EMSE#TRPBF

PRODUCTION

LTC3639HMSE#PBF

PRODUCTION

LTC3639HMSE#TRPBF

PRODUCTION

LTC3639HMSE#WPBF

PRODUCTION

LTC3639HMSE#WTRPBF

PRODUCTION

LTC3639IMSE#PBF

PRODUCTION

LTC3639IMSE#TRPBF

PRODUCTION

LTC3639IMSE#WPBF

PRODUCTION

LTC3639IMSE#WTRPBF

PRODUCTION

LTC3639MPMSE#PBF

PRODUCTION

LTC3639MPMSE#TRPBF

PRODUCTION

Feb 4, 2020

- 20_0129

arrow down

Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3639EMSE#PBF

PRODUCTION

LTC3639EMSE#TRPBF

PRODUCTION

LTC3639HMSE#PBF

PRODUCTION

LTC3639HMSE#TRPBF

PRODUCTION

LTC3639IMSE#PBF

PRODUCTION

LTC3639IMSE#TRPBF

PRODUCTION

LTC3639MPMSE#PBF

PRODUCTION

LTC3639MPMSE#TRPBF

PRODUCTION

Jun 21, 2022

- 22_0050

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UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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DC1901A

LTC3639EMSE Demo Board | Sync Buck, 4V ≤ VIN ≤ 150V, VOUT = 1.8V/3.3V/5V/Adj @ 100mA

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DC1901A

LTC3639EMSE Demo Board | Sync Buck, 4V ≤ VIN ≤ 150V, VOUT = 1.8V/3.3V/5V/Adj @ 100mA

LTC3639EMSE Demo Board | Sync Buck, 4V ≤ VIN ≤ 150V, VOUT = 1.8V/3.3V/5V/Adj @ 100mA

Product Detail

Demonstration circuit 1901A is a 150V input, 100mA output DC/DC power supply featuring the LTC3639. The IC operates in a high efficiency Burst Mode® operation and includes internal high and low side power MOSFETs. The board will accept an input voltage between 4V and 150V, and provide jumper selected output voltages of 1.8V, 3.3V, 5V and an option for additional voltages. The IC includes internal soft-start and a provision for increasing soft-start time.

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AD-BMSE2E3W-SL

72 V to 96 V Battery Management System for Electric 2- and 3-Wheelers

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AD-BMSE2E3W-SL

72 V to 96 V Battery Management System for Electric 2- and 3-Wheelers

72 V to 96 V Battery Management System for Electric 2- and 3-Wheelers

Features and Benefits

  • Variable 72 V to 96 V voltage range, suitable for E2W/E3W applications
  • ASIL-D compliant and automotive grade BMS chip
  • Built-in charge, pre-charge, and discharge circuitry
  • 1.8 mV total measurement error (TME) for cell voltage monitoring
  • High performance cell/pack voltage and current monitoring​
  • On-board isoSPI communication​
  • Low Power Cell Monitoring (LPCM) capability​
  • GPIO Controllable FET Monitoring​
  • ADBMS6830 GPIO input ready for NTC sensors​
  • Low Power MAX32690 MCU​
  • UART and CAN Communication​
  • SOC and SOH thru Enhanced Coulomb Counting Technique​
  • E2W/E3W Basic System Behavior Modes​
  • Embedded Application-ready (via CLI)​
  • With GUI capable of the following measurements and fault detection:​
    • Cell Monitoring​
    • Voltage and Current Pack Monitoring​
    • Charge Current Monitoring​
    • Discharge Current Monitoring​
    • Temperature Monitoring​
    • Cell OV/UV Detection​
    • Cell/GPIO Open-wire Detection​
    • Cell Balancing​

Product Detail

The AD-BMSE2E3W-SL is a BMS reference design for light electric vehicles (LEVs). With a voltage range of 72 V to 96 V, this solution is suitable for electric 2-wheeler and 3-wheeler vehicles with high current capacity ranging up to 100 A. ​​

This single-board system utilizes the best-in-class ADBMS6830 cell monitoring chip that is capable of monitoring up to 2x 16-channel. This board also features battery pack monitoring using the ADBMS2950. ​The ADBMS6822 dual isoSPI transceiver provides a built-in 2-wire reversible isoSPI connection, which simplifies the communication of BMS parts in a daisy chain configuration before sending the data to SPI lines in the microcontroller. ​​

The on-board MAX32690 MCU, when loaded with the firmware, can perform BMS measurements such as cell voltage (average and filtered), and pack voltage and pack current measurement. The board also has a charge, pre-charge, and discharge mode that can be controlled by the ADBMS2950 pack monitor chip.​

The AD-BMSE2E3W-SL is designed to perform either in embedded mode or using a GUI, where it calculates the battery's State of Charge (SoC) and State of Health (SoH) through enhanced coulomb counting technique.​

APPLICATIONS

  • Electric and hybrid 2-wheeler vehicles
  • Electric and hybrid 3-wheeler vehicles
  • Light electric vehicles
Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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